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This video introduced me to Jaimie Mantzel. He not only builds toys, he builds everything else! The top comment at reddit tells more about him.
This guy is a complete and total bad-ass. Seriously. (He's...

Don Schoendorfer makes wheelchairs out of lawn chairs and bicycle wheels. His hobby was inspired by a woman in India who crawled across the dirt because she had no wheelchair. After building 100 of the inexpensive chairs...